Address Valid Time When Using AUTOPTR1/2 for External Data Memory Access | Cypress Semiconductor
Support & Community
Address Valid Time When Using AUTOPTR1/2 for External Data Memory Access
How can we address external memory when using the AUTPOPTR1 or AUTOPTR2 in FX2/FX2LP 8051?
When using the AUTPOPTR1 or AUTOPTR2 to address external memory, the address of AUTOPTR1 will only be active while either RD# or WR# are active. The address of AUTOPTR2 will be active throughout the cycle and meet the address valid time which is based on the stretch value. Scetion 9.3 and 9.4 of the latest version of the datasheet provides this information.